a tax on的用法和样例：
- The care of six children was a tax on her energies.
- The governor has put a tax on cigarettes.
- The care of six children is a tax on her energy.
- Climbing stairs is a tax on a weak heart.
- Lottery A tax on people who are bad at math.
- A sales tax is a tax on the freedom of purchase.
- lay a tax on something 对某物课税
a tax on的相关资料：